Orca Forum Translation problem

I hope someone could help me because I cant translate my Orca Forum at all. In my language file there is not any of those words which is displayed in my orca forum. Also I have bought Master Language Editor but it cant either display orca forum fieldcaptions. Well some of them yes but not all.

My Orca forum doesnt even speak english x)

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You need to compile your languages, which can be done from the forum management page under Forums > Manage Forum under the main navigation menu.

Well thank you... another step to forward :) but it's keep saying me "[L[Language files compilation have been failed]]" .... I think once it worked but nothing really happened.

And also maybe another question but almost same ... why in my site there is lot's of textfields which is saying "_FieldCaption_Name_Join" or etc..... Why I cant translate these text at all?